LibreOffice Litmus at:
https://tcm.documentfoundation.org/
requires a login. This is a needless barrier to entry, which is
especially unfortunate as Litmus itself is quite simple to use. Allowing anonymous (read-only) access would allow testers to have a look around and find it is something they are interested in.

http://caseconductor.wordpress.com/ is the rewrite of Litmus at Mozilla and it already has an option to allow anonymous read-only access. Depending on how hard it is to use caseconductor instead, we should consider switching.